3)- Determine the total number of conformers and draw the Chair Structures of the conformers for the Tri-substituted cyclohexane structure given below (i.e., "A"). Draw the relative energy diagram for the possible conformers for the cyclohexane structure below. Note, draw only the required structures for the conformers of A. Also, include hydrogen atoms wherever there are substituents on all of your chair conformers. Answer (Total #of Conformers): Chair Structures: Relative Energy Diagram 8 bas roll 3
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- Consider the molecule 1-bromo-2-methylbutane. C3 and C4 should be drawn as Et as in theexample. This group is called an ethyl group and can be considered a sphere about twice the sizeof a methyl group. Draw the following Newman projections sighting down the C1C2 bond... a. The lowest potential energy conformation. b. The highest potential energy staggered conformation.2)- Determine the total number of conformers of the tetra-substituted cyclohexane structure given below (L.e, Draw the chair conformers of A that are, 6-levels of stability from the most stable of A, the sixth most staat conformer ofA, 9-levels that is unstable from the most unstable of A, and 5-levels of insta from the most unstable of A and the conformers of A that is representative of B. Note, only a total of six structures should be written on your paper. Also, include hydrogen atoms wherever are substituents on all of your chair conformers. Note, a table listing is a requirement for this problerm Answer (Total # of Conformers of A): 6-Levels of stability from the most stable of A: The sixth most stable conformer of A: 9-Levels that is unstable from the most unstable of A 5-levels of instability from the most unstable of A 스 Conformers of A that is representative of B:Hello, I was reading an answer from the book Organic Chemistry by Brown et al. The question is 2.51 "Draw alternative chair conformations for each substituted cyclohexane and state which chair is more stable." There are then 4 cyclohexanes (labeled a-d). For the "a" cyclohexane, the substituents are arranged as a combination of axial and equatorial in both chair conformations. However, for the "b," "c," and "d," cyclohexanes one chair has only equatorial substituents, and the other chair has only axial substituents. Why is the "a" chair conformation different? https://www.bartleby.com/solution-answer/chapter-2-problem-251p-organic-chemistry-8th-edition/9781305580350/draw-alternative-chair-conformations-for-each-substituted-cyclohexane-and-state-which-chair-is-more/4532cd91-c341-11e9-8385-02ee952b546e
- It is easy to imagine a cyclohexane as a flat hexagon and a lot of the time we draw it that way. Looking at 1,3,5-triethylcyclohexane we cannot tell the stability of the molecule from looking at the flat 2D drawing. Explain why we need to look at the 3D configuration and what conformation (axial,equatorial) would each of the three ethyl groups be in for the most stable configuration.Draw Newman projections for the anti, eclipsed, gauche and fully eclipsed conformations of Butane. Indicate their relative stabilities and the reasons for your ranking-need to discuss the stresses involved in each case. Using suitable specific conformers of specific structures as examples, explain the difference between (a) angle strain (b) torsional strain and (c) steric strain. Need to draw the confomers and structures 4) Draw the most stable conformers using chair structures of the following: (c) cis-1,2-Dibromocyclohexane (d) trans-1,2-Dibromocyclohexane (e) cis-Decalin (f) trans-Decalin . Draw the most stable conformers of trans-1-Bromo-4-methylcyclohexane and cis-1-Bromo-4-methylcyclohexane. Which is more stable? Explain the reason for your answer. Need to include a discussion of 1,3-Diaxial interaction3. Draw the chair conformer of cyclohexane. Label the axial hydrogens (Ha) and the equatorial hydrogens (He).
- 4. For the following structures, draw both possible chair conformations, using a ring flip to go from one to the other, and circle the one that is most stable/lowest energy. (Hint: Use Table 4.8 in Klein.) Show all groups, including hydrogen atoms, attached to the cyclohexane ring. А. Me Me Et В. Et t-Bu Eta. Draw the lowest energy conformation for the compound shown in the image. b. Draw the complete structural formula of the following compound: cis-1-bromo-3-chlorocyclohexane.Paraphrasing ewriting Tool Car note Pirate Ship BLACKBOARD wos 6Baun paumn [Review Topics) [References) Use the References to access important values needed for this question. a. Use strain energy increments in the OWL Table Reference (see References button, Strain Energy Increments) to calculate the energy difference between the two chair conformations of the compound below. b. Specify substituent positions (axial or equatorial) in the more stable chair. c. Estimate the percent of the more stable chair at equilibrium at 25°C. (To determine the percent of the more stable chair at equilibrium, first calculate Ke and then use this value to find the percentage.) OH (in isopropanol) Answers: a. The energy difference is b. In the more stable chair: kJ/mol. o The methyl group is in the o The hydroxyl group is in the e position. 8 position. c. At 25°C the equilibrium percent of the more stable chair conformation is approximately Submit Answer Retry Entire Group 9 more group attempts remaining…
- How do you account for the difference in energies between the two staggered conformations of 1,2-dichloroethane? How about for the two eclipsed conformations? Draw all four conformations and, on your drawing, indicate sources of strain – torsional, steric (gauche), steric eclipsed.For the following two pairs of molecules, (1) Draw out the chair conformation for each molecule, flip the ring if it is possible. (2) Compare both molecules to circle out which one is more stable. (3) Identify their relationship as: constitutional isomer, conformational isomer, stereoisomer or identical. (4) Find all the chiral center on each molecule and label them. VS. ****Look at the model of chloroethane. a) Do all chloroethane molecules spend all of their time in this preferred conformation? Explain why or why not. b) What is the preferred conformation called?